how not to initialize HD

Michael Hennebry hennebry at
Fri Aug 6 15:24:04 UTC 2010

On Fri, 6 Aug 2010, Gregory Hosler wrote:

> may, in fact, not be reclaimable -- in Linux, partitioning is usually done on
> cyl boundaries).

Would you expound on that a bit?
I've often seen *fdisk complain that a partition
did not end on a cyl boundary.
I've also read that cyl boundaries are not all that meaningful anymore.
In particular, I've read that (cyl, head, sector)
indexing is especially useless lately.
I expect that is at least partly because not all cylinders
are the same size even on the same drive.
What is *fdisk actually complaining about when
it complains about a cylinder boundary?
Why does it care?

Michael   hennebry at
"Pessimist: The glass is half empty.
Optimist:   The glass is half full.
Engineer:   The glass is twice as big as it needs to be."

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